The procedure of test for cracking due to environmental stresses on electric polyethylene insulation or sheath of cables
: Double Walled water bath : 15 x 15 x 18 (LBH in Inches)
Cracks and deformation occur when the material is bend or wound under cold conditions. The apparatus is deigned to wound the cable samples on standardized mandrels under cold conditions.
Most materials when exposed to extreme cold over a period of time become hard and britle. This test is designed to study the effect of cold tempertures on material under mechincal shock.
When the Cables / Electrical Equipments are subjected top extreme cold for a considerable duration of time, they may become hardened and stiff. Such hardness and stiffness cause cracking of the insulation or sh
Copper Purity Apparatus is designed to determine the purity of copper by electrolytic method. The sample copper is dissolve in sulphuric – acid and nitric acid mixture and copper is deposited electrolyt
During the armoring process and subsequently during laying of the cable, the armor wires are subjected to torsion stress. The test is conducted to evaluate the torsion resistance of the wire.